Effects of maximum repetition resistance exercise at different intensities on excess post-oxygen consumption: Examination by BIG3 exercises

Abstract

This study aimed to examine the excess post-exercise oxygen consumption (EPOC) following resistance exercises with a maximum number of repetitions at different intensities. Ten healthy, trained men performed three sets of resistance exercises, which consisted of bench presses, deadlifts, and squats, on three separate occasions that differed in exercise intensity. During each exercise session, the participants performed 50%, 70%, or 90% of one repetition maximum (1RM). All exercises were performed with maximum repetitions. Expiration and heart rate were monitored continuously throughout the exercise sessions and for 120 min after the sessions had concluded. The exercise volume, mean heart rate, total oxygen consumption, and total energy expenditure during exercise were highest with 50% of 1RM and lowest with 90% of 1RM (P<0.05). For all three intensity levels, oxygen consumption was significantly higher throughout the 120 min following exercise than it was at rest (P<0.05). However, there were no significant differences in the total EPOC between the three levels. The results of this study suggest that exercise intensity and volume may not have a significant effect on EPOC in resistance exercise with maximum repetition.